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Spectral analysis of some selected hydrochemcial parameters of lower diyala river | ||
| basrah journal of science | ||
| Article 1, Volume 24, Issue 1, 2006, Pages 58-73 PDF (0 K) | ||
| Author | ||
| Q. A. Al-Suhail | ||
| Abstract | ||
| Many hydrochemcial parameters of Lower Diyala river including electrical conductivity (EC), Ca+2, Mg+2, SO , Cl-1, HCO and total hardness (TH) were analysed for their periodicities using monthly measurements for the period 1983-1987. Results showed significant autocorrelation for all the studied series and therefore they subjected to the spectral (Fourier) analysis to investigate the main periodicities that contribute to the total variance of the observed data. Most of the selected parameters have strong (less frequent) semi-annual and biannual cycle as well as seasonal cycle for Mg+2, Cl-1 and total hardness. These results reveal the variation of the factors affecting the river water quality including hydrological and meteorological conditions as well as the impact of human activities through the river catchment area | ||
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